Airbags comprising hingedly affixed non-inflatable support members

• US 8,439,397 B1
• Filed: 05/29/2012
• Issued: 05/14/2013
• Est. Priority Date: 05/29/2012
• Status: Active Grant

• Current Assignee: Toyota Motor Corporation
• Original Assignee: Toyota Motor Engineering & Manufacturing North America Incorporated (Toyota Motor Corporation)
• Inventors: Steinbrecher, Robert C.
• Primary Examiner(s): Rocca, Joseph
• Assistant Examiner(s): Coker, Robert A
• Application Number:
  US13/482,372
• Time in Patent Office: 350 Days
• Field of Search: 280/728.2, 280/729, 280/730.2, 280/743.1, 280/743.2
• US Class Current: 280/730.2
• CPC Class Codes: B60R 2021/23388 having ends which are movable or detachable during deployment
• CPC Class Codes: B60R 21/232 Curtain-type airbags deploying mainly in a vertical direction from their top edge

Abstract

Airbags including hingedly affixed non-inflatable support members and vehicles including such airbags are disclosed. An airbag includes a body portion, a non-inflatable support member having a proximal end and a distal end, and a tether having a support-member-end and an airbag-end. The proximal end of the non-inflatable support member is hingedly affixed to the body portion of the airbag. The support-member-end of the tether is affixed to the distal end of the non-inflatable support member and the airbag-end of the tether is affixed to the body portion of the airbag, thereby tethering the distal end of the non-inflatable support member to the airbag. When the airbag is in a pre-deployment state, the distal end of the non-inflatable support member does not extend beyond a perimeter of the airbag. The non-inflatable support member extends beyond the perimeter of the airbag in a deployed position.

Claims

1. An airbag comprising a body portion, a non-inflatable support member having a proximal end and a distal end, and a tether having a support-member-end and an airbag-end, wherein:

the proximal end of the non-inflatable support member is hingedly affixed to the body portion of the airbag; and

the support-member-end of the tether is affixed to the distal end of the non-inflatable support member and the airbag-end of the tether is affixed to the body portion of the airbag, thereby tethering the distal end of the non-inflatable support member to the airbag, wherein;

when the airbag is in a pre-deployment state, the non-inflatable support member is folded over the body portion in a pre-deployment position, in which the distal end of the non-inflatable support member does not extend beyond a perimeter of the airbag; and

as the airbag fills with gas when deployed, the airbag expands and creates tension in the tether, which is translated to the distal end of the non-inflatable support member, thereby pulling the non-inflatable support member to a deployed position that extends beyond the perimeter of the airbag.

2. The airbag of claim 1 further comprising a first non-inflatable portion directly adjacent to the perimeter, wherein the non-inflatable support member is hingedly affixed to the first non-inflatable portion.

3. The airbag of claim 2 further comprising a second non-inflatable portion not directly adjacent to the perimeter, wherein the airbag-end of the tether is affixed to the second non-inflatable portion.

4. The airbag of claim 1, wherein the airbag is installed in a vehicle and the non-inflatable support member contacts an interior portion of the vehicle when the non-inflatable support member is in the deployed position.

5. The airbag of claim 4, wherein the airbag is a side curtain airbag.

6. The airbag of claim 1, wherein the body portion includes an inflatable portion that inflates with gas when the airbag is deployed and a non-inflatable portion that does not inflate with gas when the airbag is deployed.

7. The airbag of claim 6, wherein the airbag-end of the tether is affixed to the non-inflatable portion.

8. The airbag of claim 1, wherein the non-inflatable support member is hingedly affixed to the body portion of the airbag by stitching.

9. The airbag of claim 1, wherein:

the body portion of the airbag includes a first side and a second side;

the non-inflatable support member is folded over the first side of the body portion in the pre-deployment position; and

the tether is routed from the distal end of the non-inflatable support member, along a side of the non-inflatable support member not facing the first side of the body portion, around the perimeter of the airbag, and along the second side of the body portion of the airbag.

10. The airbag of claim 1, wherein the non-inflatable support member is integrally formed with the fabric of the airbag.

11. The airbag of claim 1, wherein the non-inflatable support member is formed from plastic, metal or a composite material.

12. A vehicle comprising a passenger compartment and an airbag located within the passenger compartment, wherein the airbag comprises a body portion, a non-inflatable support member having a proximal end and a distal end, and a tether having a support-member-end and an airbag-end, wherein:

the proximal end of the non-inflatable support member is hingedly affixed to the body portion of the airbag; and

the support-member-end of the tether is affixed to the distal end of the non-inflatable support member and the airbag-end of the tether is affixed to the body portion of the airbag, thereby tethering the distal end of the non-inflatable support member to the airbag, wherein,

when the airbag is in a pre-deployment state, the non-inflatable support member is folded over the body portion in a pre-deployment position, in which the distal end of the non-inflatable support member does not extend beyond a perimeter of the airbag; and

as the airbag fills with gas when deployed, the deploying airbag creates tension in the tether, which is translated to the distal end of the non-inflatable support member, thereby pulling the non-inflatable support member to a deployed position that extends beyond the perimeter of the airbag and contacts an interior portion of the passenger compartment of the vehicle to support the deployed airbag.

13. The vehicle of claim 12, wherein the interior portion is a trim panel, such that when the non-inflatable support member is in the deployed position, the non-inflatable support member contacts the trim panel, thereby supporting the deployed airbag.

14. The vehicle of claim 12, wherein the airbag further comprising a first non-inflatable portion directly adjacent to the perimeter, wherein the non-inflatable support member is hingedly affixed to the first non-inflatable portion.

15. The vehicle of claim 14, wherein the airbag further comprising a second non-inflatable portion not directly adjacent to the perimeter, wherein the airbag-end of the tether is affixed to the second non-inflatable portion.

16. The vehicle of claim 12, wherein the body portion of the airbag includes an inflatable portion that inflates with gas when the airbag is deployed and a non-inflatable portion that does not inflate with gas when the airbag is deployed.

17. The vehicle of claim 12, wherein:

the body portion of the airbag includes a first side and a second side;

the non-inflatable support member is folded over the first side of the body portion in the pre-deployment position; and

the tether is routed from the distal end of the non-inflatable support member, along a side of the non-inflatable support member not facing the first side of the body portion, around the perimeter of the airbag, and along the second side of the body portion of the airbag.

18. The vehicle of claim 12, wherein the airbag is a side curtain airbag.

19. An airbag comprising a body portion, a non-inflatable support member having a proximal end and a distal end, and a tether having a support-member-end and an airbag-end, wherein:

the body portion includes an inflatable portion that inflates with gas when the airbag is deployed and a non-inflatable portion that does not inflate with gas when the airbag is deployed;

the proximal end of the non-inflatable support member is hingedly affixed to the body portion of the airbag; and

the support-member-end of the tether is affixed to the distal end of the non-inflatable support member and the airbag-end of the tether is affixed to the non-inflatable portion of the body portion of the airbag, thereby tethering the distal end of the non-inflatable support member to the airbag, wherein;

when the airbag is in a pre-deployment state, the non-inflatable support member is folded over the body portion in a pre-deployment position, in which the distal end of the non-inflatable support member does not extend beyond a perimeter of the airbag; and

as the airbag fills with gas when deployed, the deploying airbag creates tension in the tether, which is translated to the distal end of the non-inflatable support member, thereby pulling the non-inflatable support member to a deployed position that extends beyond the perimeter of the airbag.

20. The airbag of claim 19 further comprising a first non-inflatable portion directly adjacent to the perimeter and a second non-inflatable portion not directly adjacent to the perimeter, wherein the non-inflatable support member is hingedly affixed to the first non-inflatable portion and the airbag-end of the tether is affixed to the second non-inflatable portion.